Drug interactions
Baclofen + Methylenedioxymethamphetamine
Severity: Moderate
Baclofen and Methylenedioxymethamphetamine: moderate interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
MDMA is a stimulant of abuse that can cause hyperthermia, tachycardia and hypertension, while baclofen is sedating, so the effects are unpredictable. Baclofen may mask the stimulant effects and encourage higher MDMA doses, and the combination has not been well characterized.
What this interaction means in plain words
Baclofen and Methylenedioxymethamphetamine can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Why it happens
Opposing pharmacodynamic effects, with serotonergic and sympathomimetic stimulation from MDMA against GABA-B mediated CNS depression from baclofen; no defined interaction mechanism.
What to do
Advise patients to avoid MDMA, as it is an illicit substance with serious toxicity of its own. If exposure is suspected, monitor temperature, heart rate, blood pressure and level of consciousness.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Baclofen and Methylenedioxymethamphetamine, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 14 days on the web. No card needed.
Other interactions of Baclofen
Frequently asked questions
Can I take Baclofen with Methylenedioxymethamphetamine?
MediHelp rates the interaction as moderate. Baclofen and Methylenedioxymethamphetamine can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. MDMA is a stimulant of abuse that can cause hyperthermia, tachycardia and hypertension, while baclofen is sedating, so the effects are unpredictable. Baclofen may mask the stimulant effects and encourage higher MDMA doses, and the combination has not been well characterized.
How serious is the interaction between Baclofen and Methylenedioxymethamphetamine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Advise patients to avoid MDMA, as it is an illicit substance with serious toxicity of its own. If exposure is suspected, monitor temperature, heart rate, blood pressure and level of consciousness.
What other medicines interact with Baclofen?
MediHelp also lists interactions of Baclofen with, for example, Alfentanil, Amobarbital, Belladonna and opium. The full list is on the Baclofen page.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
